000			02950nam a22002417a 4500
005			20251007131340.0
008			251007b |||||||| |||| 00| 0 eng d
040			_eNLM
060			_aWU 141 _b00766
100			_aChaudhary, Roshan Kumar Dr.
245			_aAge estimation of Nepalese children based on open apex measurement in the developing permanent dentition
260			_aKathmandu, Nepal ; _bKathmandu University & Nepal Health Research Council (NHRC) ; _c2025.
300			_a74p.
500			_aIn partial fulfilment of the requirements for the degree of Master in Medical Research.
520			_aINTRODUCTION Cameriere's original formula, based on open apex measurements, is a reliable and clinically applicable method for estimating dental age in various populations of children. Dental development may differ between Nepalese children and other ethnic groups, influencing dental age accuracy using Cameriere's formula. MATERIAL AND METHOD A retrospective cross-sectional study of 260 good quality Orthopantomograms (OPCs) of 5-15 aged Nepalese children was collected from the archive of Department of Oral Medicine and Radiology, College of Medical Sciences, Bharatpur, Nepal. OPGs were evaluated for No, S, and Xi morphologic variables with Image J software, which is a free domain. Dental age was calculated using Cameriere's original formula and compared to chronological age (CA). The multiple linear regression formula was used to modify Cameriere's formula to create a Nepalese formula. The same sample was used to verify the new formula's accuracy. AIM The objective of the study was to estimate the age of Nepalese children based on open apex measurement in the developing permanent dentition. RESULT Cameriere's original formula revealed -0.21 and -0.23 year underestimation of male and female dental age (DA) respectively (p <0.001). Linear regression analysis using the morphologic variables showed that first molar, first premolar, canine, central incisor, later incisor and No contributed significantly to CA yielding Nepalese specific formula. The new formula showed - 0.02 year female underestimation and 0.01 year male overestimation (p<0.001) which has a higher accuracy than the Cameriere's original formula. CONCLUSION The Nepalese formula was more accurate than Cameriere's formula in Nepalese children. The Nepalese-specific formula reduces the gap between CA and DA, yielding an accurate result that aids in forensic identification, effective diagnosis, and treatment planning for orthodontic and pediatric dentistry problems. Keywords: Camerieres; dental age estimation; linear regression formula; Nepalese children; open apices.
650			_aCamerieres.
650			_aDental age estimation.
650			_aLinear regression formula.
650			_aNepalese children.
650			_aOpen apices.
856			_yhttps://nhrc.gov.np/contact _zVisit NHRC Library
942			_2NLM _cTR _kTHS00766-CHA-2025. _n1
999			_c3478 _d3478